When two conductors each of resistance R are attached in series to external circuit, their net resistance is:
Correct answer: B. 2R
- A. R
- B. 2R
- C. 3R
- D. 4R
Explanation
When two conductors each of resistance R are attached in series to an external circuit, their net resistance is equivalent resistance, R = R+R = 2RDiagram:
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Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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